Coke-oven-damper valve



June 8 ,1926.

., J. MCINTOSH ET Al.

COKE OVEN DAMPER VALVE Filed oct. 1o 1923 2 sheets-sheet 1 J. MSINTOSHyET AL COKE OVEN DAMPER VALVE June 8,1926. 1,587,912

Filed Oct. 1o, 1925 `gshegemsnsneet.2

Patented June 8, 1926.

UNITED *A STAT A'fs PATENT/1 JAMnsMCINTosm oF NORTH BRAnnooK, AND JOHNW. MILLER, or cLAIaroN,

f PENNSYLVANIA. Y

ooKn-ovEN-DAMPER VALVE.

Application mea october 1o,y ma serial No. 661743,

l Thisinvention relates to by-product coke ovens, and more particularlyto means for flushing the damper valves of said ovens and cooling thegases prior to'their entrance into the collecting main.

One object of th'epresent invention is to vprovide a continuous flow offlushing liquor tov the damper valves of by-product coke ovens. j i

Another object is to provide a novel form of damper valve? and fluidsupply nozzle adapted to co-operate to form a-vspray of flushing Huid inthe valve casing, thus flush#v side by side. The ovens are usuallytightly closed during the coking period and each oven has an otake orstand-pipe which conducts the hot gases evolved in the coking processaway from the oven. The stand-pipe, usuallylocated at one end of theoven, conducts the hot gases to a damper valve casing,`

from I which theyV enterl Va collecting main common to a plurality ofovens. When an .oven is open to the atmosphere for pushing,` charging orstanding empty, vit is usually shut oil from the collec-tingy main.Thatl is,

, the damper valve is closed.

' The gas which leaves the ovens carries considerable tar and i this tarforms a" deposit on the damper valves and seatsso that in many instancesthe damper valves becomestuckand arehard to open,- with the result thatmuch valuable gas is'lost, since the ovens cannot be closed to theatmosphere `for any length of time without 'the damper valves being openwhen the oven is charged.k

If the damper valve should remain closed and the oven. is Yclosed to theatmosphere and coking is going on, a high gas pressure results whichwill damage the' oven walls.

The present invention provides means for preventing the deposit of tarson the damper valves and seats and, therefore, eliminates sticking ofthese valves. c

The gases, which are evolved during the Acoking process, leave the ovensor coking chambers at a high temperature and the first step in.recovering byproducts is'to reduce the temperature of the gases so asvtocause a condensation of the tar oils. Material advapplied thereto.

vantageslin operation result from electing this reduction of temperaturequickly and as soon as possible after the gases leave the ovens. vThepresent invention provides for v'the cooling `of the gases prioritotheir en-.K

trance into the collecting main. n l

InV the drawings, l'Figure l is a` somewhat diagrammatic plan view of aportion of a battery `of coke ovenshaving thisinvention Figure 2 is afront elevation thereof. Figure '3 is a sectional elevation through oneofthe damper valves,'taken on the line IlIIII ofFigure l. 'n 1 Figure 4Cis a similar elevation taken on the line IV--IVO F igure l. y vReferringmore particularly to the drawings, vthe numeral 2 designates `therbattery of ovens as `a whole, which have cokingr chambers 3. Astand-pipe or ascension pipe 4; extends upwardly from the one end ofeachof the ovens or coking chambers 3 and is connected witha dampervalve casing 5, which has anoutlet 6 opening through a fitting 7 into acollecting.main- 8 WhicheX- tends along the Whole battery of ovens.

`The valve casingv 5 is provided with a valve seat.9\ around the outlet6 andfacvertically operablev damper valve 10 is mounted vin the casing 5and adaptedto be engaged with. the seat i9' to close the oven `oli fromthe collectingmain when kthe oven is open to the atmosphere.

Thevalve 10is provided with a seat bearing flange l1 adapted to engagethe valve A suitable i'lushing'lfluid pipe or conduit '14 extends alongthe ovens and is adapted to have a cooling-and flushing,liuidgpassedBranch con- I therethrough under pressure. duitslaa lead from the pipe14 to a point adjacent each valve casing, and a nozzle pipe l5 leadsfrom the branch conduits l1st through the itting 7 below each of thevalve fseat 9 and a downwardly lextending circular skirt 12.

ca'sings 5 and terminate in an upwardly projecting nozzle portion 16.

The cooling 'and flushing fluid under pressure passes through the pipesl5 and noz'- Zles lvand is forced upwardly against thev damper valves10. As the fluid or liquid against the skirt 1'2, which will balile theHuid and cause it to. fall y.downwardly in a curtain-like spray so as toflush the interior of the valve easing and valve seat, thus removing anytar deposits and also materially cooling the gases, as they must passthrough the spray of cooling and flushing fluid to ent-er the collectingmain.

The skirt 12 also serves to limit the outward spread of the cooling andflushing' fluid as it strikes the loiver tace of the valve, and thusvprevents the fluid entering the stand-pipes 4i.

Fromthe above it will be readily seen that We have provided anelfectivemeans ior ycooling the gases prior to their entering the collectingmain, by Compelling theml be limited thereto, since various lmodioa#`tions may be made Without departing from the seope of the invention asdefined in the appended claims.

l. A damper valve for by-produet coke ovens, comprising a Casing havingan inlet opening adapted to be Connected With a` stand pipe leading froman oven and an outletopening adapted to be connected to a gas collectingmain, a valve member adapted to move vertically in said Casing, a seat'for said valve, a nozzle pipe extending into said' oasi/ngk and adaptedto project a stream of flushing fluid upwardly into said valve casingand against 'the bottom of said valve When said valve is in either openor closed position, and means on said valve'for preventing said fluidfrom entering said in-v let opening and for causing said fluid to talldownwardly from said valve in the form of'a spray. y

2. A damper valve for by-product coke ovens, comprising a easing havingan inlet opening adapted to be connected With' a stand pipe leading froman oven and an outlet opening adapted to be connected to a gascollecting main, a valve seat around the outlet opening in the-easing.anda valve member adapted to engagethe 'l seat and olose the outletopening, a nozzle pipe below said valve-seat andadapted top-projectastream of iushing fluid upwardly into said valve easing and against thebottom of f. said valve when said valve is in either open or closedposition, and means on said valve for preventing said luid from enteringsaid inlet opening and for causingsaid of lflushing l'luid l upwardlyinlto v said "valve easing and against'the"bottom'of said valve' whensaid valve is in either' open o'r closed position. y

4i. A damper valvetor Iley-product'"coke ovens, comprising afcasinghaving 'an inlet opening adapted to be connected with a stand pipeleading fron-'ian oven an'd'an outlet openingv adapted to beeonneeted'vto a gas'colleeting main, ayalve member 'adapted'to movevertically insaid Casing, a seat for said valve, `a nozzle vpipeextending into saidcasing and adaptedfto project a stream of flushingfluid upwardly into said valve ycasing and-against theblottom'ofsaidvalve when said valve isin' either open or closedposition,- and a downwardly projeetmgslirt on the'bottomfaee of'saidvalve adapted Ato intercept the liuid'iafter it strikes said valve, andto cause it to fall downwardly from said,l valve in a curtain-likespray,

through which the gases passing through the outletopeiiiiiginto thecollectingv main must pass. l y V -In testimony whereof,` We havehereunto set our hands. n I

v JAMES MCINTOSH.

JOHN W. MLLER,

